Fix the linear-rgb canvas color space so that it renders

third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 71 matching lines @@
         // So if CSS is color corrected from sRGB to display space, then
         // canvas must do the same
         return SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
       }
       return nullptr;
   };
   CHECK(false);
   return nullptr;
 }
 
+SkColorType CanvasRenderingContext::colorType() const {
+  switch (m_colorSpace) {
+    case kLinearRGBCanvasColorSpace:
+      return kRGBA_F16_SkColorType;
+    default:
+      return kN32_SkColorType;
+  }
+}
+
 void CanvasRenderingContext::dispose() {
   // HTMLCanvasElement and CanvasRenderingContext have a circular reference.
   // When the pair is no longer reachable, their destruction order is non-
   // deterministic, so the first of the two to be destroyed needs to notify
   // the other in order to break the circular reference.  This is to avoid
   // an error when CanvasRenderingContext2D::didProcessTask() is invoked
   // after the HTMLCanvasElement is destroyed.
   if (canvas()) {
     canvas()->detachContext();
     m_canvas = nullptr;
@@ skipping 53 matching lines @@
   }
   return taintOrigin;
 }
 
 DEFINE_TRACE(CanvasRenderingContext) {
   visitor->trace(m_canvas);
   visitor->trace(m_offscreenCanvas);
 }
 
 }  // namespace blink